case "$MODE" in
    configure)
        ARCH=${ARCH:-"$(dpkg --print-architecture)"}
        APT_GET_OPTS=${APT_GET_OPTS:-"--no-install-recommends -y"}
        DIST=${DIST:-"$(lsb_release -s -c)"}
        MIRROR=${MIRROR:-"http://archive.ubuntu.com/ubuntu"}
        COMPONENTS=${COMPONENTS:-"main restricted universe multiverse"}
        EARLY_PACKAGES=${EARLY_PACKAGES:-"ltsp-client ldm dbus"}
        OVERRIDE_EXPORTS=${OVERRIDE_EXPORTS:-"true"}
        export DEBIAN_PRIORITY=critical
        ;;
esac
